Sr Mainframe Developer
17 hours ago
Jersey City
Job title: Sr Mainframe Developer Location: Jersey City, NJ (Onsite) Term: Contract Job Description: • Design, develop, test, and maintain mission-critical banking applications using COBOL, CICS, JCL, DB2, and VSAM, • Build and support CICS online transactions for core banking functions such as account management, fund transfers, and loan processing, • Write and tune DB2 SQL queries, stored procedures, and perform explain plan analysis for high-volume financial data, • Create, maintain, and troubleshoot JCL batch jobs supporting end-of-day, end-of-month, and regulatory reporting cycles ·, • Diagnose and resolve production issues, system failures, and performance bottlenecks in a zero-downtime banking environment, • Conduct code reviews, enforce coding standards, and mentor junior developers, • Collaborate with business analysts, architects, and compliance teams across the full SDLC — from requirements to deployment, • Support mainframe modernization initiatives including integration with digital banking platforms and REST APIs, • Ensure all development adheres to banking regulations, audit controls, and security standards (SOX, PCI-DSS, FFIEC), • Maintain thorough technical documentation including design specs, runbooks, and change management records Job Requirements: • 10+ years of hands-on IBM mainframe development experience, preferably in banking or financial services, • Expert-level proficiency in COBOL and CICS transaction programming, • Strong command of JCL, z/OS utilities (SORT, IDCAMS, IEBGENER), and batch processing, • Deep knowledge of DB2 — SQL optimization, bind/rebind, and performance tuning for large financial datasets, • Solid experience with VSAM file structures and access methods · Familiarity with REXX/CLIST scripting for automation ·, • Understanding of banking domain concepts — core banking, payments (ACH, SWIFT, Fedwire), GL, and reconciliation, • Exposure to mainframe-to-distributed integration (MQ, APIs, Web Services) is a plus, • Knowledge of DevOps for mainframe tools like Zowe, IDz, or DBB is highly desirable Years of experience required: 8-10